Cover Photo Fred Burrell Science Photo Library
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| PAN 0330 02809X from 1971 | PAN 0330 02809X from 1976 |
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| A sample page. | |
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| PAN 0330 300733 from 1997 Cover Photo Fred Burrell Science Photo Library |
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| The cards as found in the two editions. | |
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| Kangaroo 0671 822470 from 1971 | |